Whenever I home the delta, (it homes perfectly) the first movement command for Any of the steppers causes only the XYZ steppers to rise up +5 Z height, ramming into the end stops and then moving down normally. After this happens the calibration is roughly -3 Z height and the nozzle rams into the hot bed... Even if I just issue a extrude or retract command this will happen. Anytime this happens the extruder is not involved and that stepper does not move. If I home and then wait for the steppers to time out and turn off or manually turn them off then manually pull the assembly down and then issue a movement command, the assembly will jog up (roughly 5mm) and then move down the commanded ammount.
Yesterday this was happening intermittently and by using Repetier's emergency stop I could make it stop happening. Today not so much. I have also tried flashing Folger Tech's stock code and it is still happening.
Using Repetier Host V1.6.2